The proposals for micro-cogeneration and the luminous flux regulator system, were presented at the First International Fair and Conference on Bioclimatic Architecture, Sustainable Construction and Energy Efficiency in Buildings held in Zaragoza, Spain.

Endesa is also promoting the use of solar energy (thermal and photovoltaic) in buildings. The utility said that the installation of solar panels can lead to average savings of 60% in water heating, while the power generated by photovoltaic systems can be sold to the grid.

Micro-cogeneration technologies allow the simultaneous production of electricity and useful heat from the primary energy contained in fuels such as natural gas or gas oil. The efficiency of these technologies compared to traditional systems reportedly lies in their use of residual heat from the power generation process to produce hot water and/or for heating-refrigeration.

Endesa said that the power is injected into the distribution network, as there is no need to use it for self-supply. Therefore, losses occurring during electricity transmission and distribution are reduced as the power is generated at the same point it is consumed.